v3.4.22

Reactor-Core 3.4.22 is part of 2020.0.22 Release Train (Europium SR22).

What's Changed

✨ New features and improvements

• Add logging in Exceptions.throwIf[Jvm]Fatal, add isFatal methods by @simonbasle in #3122
• Improve LoggerUtils support and add TestLoggerExtension by @simonbasle in #3123

📖 Documentation, Tests and Build

• Clarify how to use processExistingClasses in debugging.adoc by @kicmeri in #3130
• Refguide: Remove mention of discouraged subscribe variant by @simonbasle in #3141
• Disable flaky BoundedElasticScheduler test by @simonbasle in #3142

🆙 Dependency Upgrades

• Upgrade Gradle to 7.5, workaround nohttp, update gradle action by @simonbasle in #3127
• Upgrade Gradle 7.5.1, Artifactory plugin 4.29.0 by @violetagg in #3144

New Contributors

• @kicmeri made their first contribution in #3130

Full Changelog: v3.4.21...v3.4.22

v3.5.0-M4

Reactor-Core 3.5.0-M4 is part of 2022.0.0-M4 Release Train (F Milestone 4).

This version brings in a few changes, bugfixes and enhancements from the 3.4.x line, most notably from 3.4.21.

These are also listed below.

What's Changed

⚠️ Update considerations and deprecations

• Micrometer module: add observation(), deprecate global registry by @simonbasle in #3104
• Reintroduction of Processors as deprecated by @simonbasle in #3112

✨ New features and improvements

• Add context-propagation-api dependency + ReactorContextAccessor by @simonbasle in #3098
• Improve ReactorContextAccessor, add tests by @simonbasle in #3107
• Polish Observation names and tag keys by @simonbasle in #3110
• From 3.4.x:
  • Implement disposing of tasks scheduled on VirtualTimeScheduler by @mdindoffer in #3097
  • Add forEach method to ContextView and subclasses by @chemicL in #3092
  • Introducing default impl for Context::forEach by @chemicL in #3101
  • Introducing Context::putAllMap by @chemicL in #3102

📖 Documentation, Tests and Build

• Make context-propagation-api dependency optional + documentation by @simonbasle in #3100
• Adapt to the changes in the context propagation API by @violetagg in #3113
• From 3.4.x:
  • Clarify ContextN.putAll(Map) intended internal use in javadoc by @chemicL in #3103
  • Rework guide on Retry with Transient Errors by @simonbasle in #3093

🆙 Dependency Upgrades

• July dependency upgrades by @simonbasle in #3115
• Update Micrometer dependency to version 1.10.0-M3 by @violetagg in #3116

New Contributors

• @mdindoffer made their first contribution in #3097

Full Changelog: v3.5.0-M3...v3.5.0-M4

v3.4.21

Reactor-Core 3.4.21 is part of 2020.0.21 Release Train (Europium SR21).

What's Changed

✨ New features and improvements

• Add windowTimeout sendNext early guard against maxSize overflow by @OlegDokuka in #3073
• Add StateLogger for structured logging of state machines by @OlegDokuka in #3077
• Implement disposing of tasks scheduled on VirtualTimeScheduler by @mdindoffer in #3097
• Add forEach method to ContextView and subclasses by @chemicL in #3092
• Introducing default impl for Context::forEach by @chemicL in #3101
• Introducing Context::putAllMap by @chemicL in #3102

📖 Documentation, Tests and Build

• Clarify ContextN.putAll(Map) intended internal use in javadoc by @chemicL in #3103
• Rework guide on Retry with Transient Errors by @simonbasle in #3093

🆙 Dependency Upgrades

• July dependency upgrades by @simonbasle in #3115

New Contributors

• @mdindoffer made their first contribution in #3097

Full Changelog: v3.4.19...v3.4.21

v3.4.20

❗ This release was not included in Project Reactor BOM.
Please check v3.4.21.

v3.5.0-M3

Reactor-Core 3.5.0-M3 is part of 2022.0.0-M3 Release Train (F Milestone 3).

This version brings in a few changes, bugfixes and enhancements from the 3.4.x line, most notably from 3.4.18 and 3.4.19. These are also listed below.

What's Changed

⚠️ Update considerations and deprecations

• Scannable.tags() rework: change in how the tags are enumerated and added a tagsDeduplicated() method which allows to enumerate without duplicates (#3037)
• Finalizing deprecation removals from public API with FluxProcessor and MonoProcessor and their implementations (#3051)
  • with the recent addition of a Sinks equivalent to EmitterProcessor, the most common remaining use case where Processor was needed is now covered (since #3042)

✨ New features and improvements

• Fix windowTimeout stress test to use sinks by @OlegDokuka in #3074
• from 3.4.x:
  • Add key hook parts to Schedulers.onHandleError by @simonbasle in #3039
  • [reactor-test] Add StepVerifier option to use ConditionalSubscriber by @simonbasle in #3035
  • Introduce an alternative to Processor-with-upstream case by @simonbasle in #3042
  • Rework Processor-with-upstream case to be backward compatible by @simonbasle in #3065
  • Implement variant of windowTimeout with fairBackpressure by @OlegDokuka in #3054
  • Add windowTimeout sendNext early guard against maxSize overflow by @OlegDokuka in #3073
  • Add StateLogger for structured logging of state machines by @OlegDokuka in #3077
  • Include classname of null-returning map function in NPE msg by @ismailalammar in #2984

🐞 Bug fixes

• from 3.4.x:
  • Fix DoOnEach ASYNC fusion triggering onNext signal twice by @simonbasle in #3045
  • Fix cancel too synchronized in MonoCollect[List] by @simonbasle in #3053
  • Async fusion bug: extra fixes and changes by @simonbasle in #3046

📖 Documentation, Tests and Build

• Correct typo in metrics.adoc by @jarredhiggs in #3047
• Fix doc typo: missing word in reactiveProgramming.adoc by @eduardNeagoe in #3075
• from 3.4.x:
  • Refguide on mobile to use screen space optimally by @tmyksj in #3019
  • Introducing JCStress tests for concurrent queues by @chemicL in #3069

🆙 Dependency Upgrades

• from 3.4.x:
  • Upgrade Checkout action, Mockito, Spotless, Artifactory by @simonbasle in #3030
  • Upgrade download, gradle enterprise, spotless, byteBuddy by @simonbasle in #3034
  • June dependency upgrades by @simonbasle in #3066
  • Update Reactive-Streams to v1.0.4 by @renovate-bot in #3055
  • Update plugin bnd to v6.3.1 by @simonbasle in #3070

New Contributors

• @jarredhiggs made their first contribution in #3047
• @eduardNeagoe made their first contribution in #3075

v3.4.19

Reactor-Core 3.4.19 is part of 2020.0.20 Release Train (Europium SR20).

What's Changed

✨ New features and improvements

• Add key hook parts to Schedulers.onHandleError by @simonbasle in #3039
• [reactor-test] Add StepVerifier option to use ConditionalSubscriber by @simonbasle in #3035
• Introduce an alternative to Processor-with-upstream case by @simonbasle in #3042
• Rework Processor-with-upstream case to be backward compatible by @simonbasle in #3065
• Implement variant of windowTimeout with fairBackpressure by @OlegDokuka in #3054
  • This is activated by the fairBackpressure boolean parameter.

🐞 Bug fixes

• Fix DoOnEach ASYNC fusion triggering onNext signal twice by @simonbasle in #3045
• Fix cancel too synchronized in MonoCollect[List] by @simonbasle in #3053
• Async fusion bug: extra fixes and changes by @simonbasle in #3046

📖 Documentation, Tests and Build

• Introducing JCStress tests for concurrent queues by @chemicL in #3069

🆙 Dependency Upgrades

• June dependency upgrades by @simonbasle in #3066
• Update Reactive-Streams to v1.0.4 by @renovate-bot in #3055
• Update plugin bnd to v6.3.1 by @simonbasle in #3070

New Contributors

• @chemicL made their first contribution in #3069

v3.4.18

Reactor-Core 3.4.18 is part of 2020.0.19 Release Train (Europium SR19).

What's Changed

✨ New features and improvements

• Backport: contextView() implem of [Flux|Mono|Synchronous]Sink by @simonbasle in #3026
• Include classname of null-returning map function in NPE msg by @ismailalammar in #2984

🐞 Bug fixes

• Fix a Many sink / EmitterProcessor subscriber disposal leak by @simonbasle in #3029

🆙 Dependency Upgrades

• Upgrade Checkout action, Mockito, Spotless, Artifactory by @simonbasle in #3030
• Upgrade download, gradle enterprise, spotless, byteBuddy by @simonbasle in #3034

New Contributors

• @ismailalammar made their first contribution in #2984

v3.5.0-M2

Feedback Needed

As always, milestones are an important step where your feedback is needed.

• We are particularly interested in feedback for the tap operator (#3013) combined to the new metrics module (#3015).

• One feature that didn't make it to this release but on which we'd like your input as well is a contextual variant of the task-decoration scheduler hook. See design in #2980 and candidate implementation in #2983.

What's Changed

⚠️ Update considerations and deprecations

• Changes in metrics dependencies and approach
  • Reactor-Core now expects and assumes Micrometer 1.10 as the metrics baseline (#3006, #3025)
  • The inlined metrics() operator and other metrics features have been deprecated (#3015)
  • A new more generic tap operator is introduced, among other things it can replace metrics() (#3013)
  • One provider for the tap is the newly introduced reactor-core-micrometer module version 1.0.0-M2 (#3015)

✨ New features and improvements

• Add 'tap', a generic side-effect/observability operator by @simonbasle in #3013
• Add default contextView() implem to [Flux|Mono|Synchronous]Sink by @simonbasle in #3021

🐞 Bug fixes

• Avoid FluxReplay buffer retaining/leaking with tiny TTL by @simonbasle in #2998
• Fix subscribers being retained by SinkOneMulticast by @simonbasle in #3002
• Fix a Many sink / EmitterProcessor subscriber disposal leak by @simonbasle in #3029

📖 Documentation, Tests and Build

• [doc] Polish Schedulers javadoc for common/cached instances by @dedeibel in #2995
• Increase landscape width of refguide content for readability by @tmyksj in #3009

🆙 Dependency Upgrades

• April round of upgrades (#2992, #2996, #3008
• Upgrade to Micrometer 1.10.0-M1 for 3.5.0-M2 by @simonbasle in #3025

New Contributors

• @dedeibel made their first contribution in #2995
• @tmyksj made their first contribution in #3009

v3.4.17

Reactor-Core 3.4.17 is part of 2020.0.18 Release Train (Europium SR18).

⚠️ Update considerations and deprecations

• Deprecate [Flux|Mono|Synchronous]Sink currentContext by @simonbasle in #2974

🐞 Bug fixes

• [agent] Avoid instrumenting methods with unwrappable returnType by @simonbasle in #2973
• Avoid FluxReplay buffer retaining/leaking with tiny TTL by @simonbasle in #2998
• Fix subscribers being retained by SinkOneMulticast by @simonbasle in #3002

📖 Documentation, Tests and Build

• [test] Fix flaky BoundedElasticTest with better controlled tasks by @simonbasle in #2968
• [doc] Polish Schedulers javadoc for common/cached instances by @dedeibel in #2995
• [test] Improve flaky BoundedElasticScheduler toString test by @simonbasle in #3010

🆙 Dependency Upgrades

• April round of upgrades: Gradle 7.4.2, plugins (download, jmh, spotless, artifactory, gradle enterprise) by @simonbasle in #2992
• Update gradle/gradle-build-action to v2.1.5 by @simonbasle in #2996
• Update ByteBuddy to v1.12.9 by @simonbasle in #3008

New Contributors

• @dedeibel made their first contribution in #2995

v3.5.0-M1

What's Changed

⚠️ Update considerations and deprecations

• Remove Kotlin extensions by @simonbasle in #2949
• Remove deprecated Mono.doOn/AfterSuccessOrError by @simonbasle in #2954
• Remove deprecated context-related operators by @simonbasle in #2953
• Change behavior of switchOnNext/switchMap default 0 prefetch by @simonbasle in #2956
• Remove deprecated ElasticScheduler by @simonbasle in #2955
• Have concatMap default to 0 prefetch behavior by @simonbasle in #2967
• Take(n) now behaves as take(n,true)/limitRequest by @simonbasle in #2969
• Deprecate [Flux|Mono|Synchronous]Sink currentContext by @simonbasle in #2974

🐞 Bug fixes

• [agent] Avoid instrumenting methods with unwrappable returnType by @simonbasle in #2973

📖 Documentation, Tests and Build

• [test] Fix flaky BoundedElasticTest with better controlled tasks by @simonbasle in #2968

Full Changelog: v3.4.16...v3.5.0-M1